Improvement in ships  chairs



D. PARKS= Ships Chairs.

Patented Aug. 10,1875.

III I WITNESSES UNITED STATES PATENT OFFICE.

DANA PARKS, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF HIS RIGHT TOFREDERICK P. SAWYER, OF GEORGETOWN, D. O.

IMPROVEMENT IN SHIPS CHAIRS.

Specification forming part of Letters Patent No. 166,628, dated August10, 1875; application filed July 26, 1875.

To all whom it may concern:

Be it known that I, DANA PARKS, of Boston, in the county of Suffolk andin the State of Massachusetts, have invented certain new and usefulImprovements in Ships Chairs; and do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings and to the letters of reference markedthereon, making apart of this specification.

The nature of my invention consists in the construction and arrangementof a chair to be used on board of ships, as will be hereinafter morefully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure l is a plan view of my invention, and Fig. 2 is a longitudinalsection of the same.

A represents an annular frame, of any suitable dimensions, supportedupon legs B B. Within the frame Ais pivoted a ring or circle, 0, andwithin said ring is pivoted another ring, D, the two rings being pivotedon diametrical lines, at right angles with each other. In the innercircumference of the inner ring D are formed notches a a to receive lugsb b, formed on the outside of a cylindrical block, G, made of suchdiameter as to fit within the inner ring D. The lugs 11 011 the blockare arranged in vertical rows, and have sufficient space between them toallow the ring to pass in between them. The block G is passed downwardthrough the center ring D, the lugs b passing through the slots atherein, and when the block has passed downward suffieiently it isturned so as to be held in place by the lugs resting on the ring, asshown. On the upper end of the cylindrical block G is secured achair-seat or stool, J, which may be raised or lowered, as desired, byraising or lowering the block or seat-rest G.

It will readily be seen that when this chair is used on shipboard thechair-seat J will remain horizontal, no matter how much the vesselrolls.

By this invention, also, the list of the vessel can be measured, ifdesired.

The same invention may be applied to rocking-chairs by simply having onepivoted ring within the stationary frame.

It must of course be understood that the lower end of the cylindricalblock or seat-support must be weighted sufficiently to overbalance theseat on its upper end.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is V The combination of the annularframe A, concentric rings 0 D, pivoted on diametrical lines at rightangles to each other, and the inner ring D, provided with slots on a,and the cylindrical seat-support G, provided with lugs b b,substantially as and for the purposes herein set forth. 7

In testimony that I claim the foregoing I have hereunto set my hand this21st day of July, 1875.

DANA PARKS.

Witnesses:

H. A. HALL, WM. A. SKINKLE.

